package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService  {
    @Autowired
    private SetmealMapper setmealMapper ;
    @Autowired
    private SetmealDishMapper setmealDishMapper ;
    @Override
    @Transactional
    public void save(SetmealDTO setmealDTO ){
        Setmeal setmeal =new Setmeal();
        BeanUtils .copyProperties(setmealDTO ,setmeal );
        setmealMapper .insert(setmeal);
        Long setmealId=setmeal.getId() ;
        List<SetmealDish> setmealDishes =setmealDTO .getSetmealDishes();
        if(setmealDishes!=null){
            for(SetmealDish setmealDishe :setmealDishes){
                setmealDishe.setSetmealId(setmealId);
                setmealDishMapper.insert(setmealDishe);
            }
        }
    }
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO){
        PageHelper.startPage(setmealPageQueryDTO .getPage() , setmealPageQueryDTO .getPageSize());
        Page<SetmealVO> page= setmealMapper .pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal() , page.getResult());
    }
    /**
     * 套餐批量删除
     * @param ids
     * @return
     */
    @Transactional
    public void deleteBatch(List<Long> ids){
        ids.forEach(id -> {

            Setmeal setmeal = setmealMapper.getById(id);
            if(StatusConstant.ENABLE == setmeal.getStatus()){
                //起售中的套餐不能删除
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        });
            setmealMapper .deleteByIds(ids);
            setmealDishMapper .deleteBySetmealIds(ids);

    }
    @Transactional
    public void update(SetmealDTO setmealDTO){
        Setmeal setmeal =new Setmeal();
        BeanUtils .copyProperties(setmealDTO ,setmeal );
        setmealMapper .update(setmeal);
        //套餐id
        Long setmealId = setmealDTO.getId();

        //2、删除套餐和菜品的关联关系，操作setmeal_dish表，执行delete
        setmealDishMapper.deleteBySetmealId(setmealId);

        List<SetmealDish> setmealDishes =setmealDTO .getSetmealDishes();
        if(setmealDishes!=null){
            for(SetmealDish setmealDishe :setmealDishes){
                setmealDishe.setSetmealId(setmealId);
                setmealDishMapper.insert(setmealDishe);
            }
        }
    }

    /**
     * 根据id查询套餐
     * @param id
     * @return
     */
    public SetmealVO getById(Long id){
        Setmeal setmeal =setmealMapper.getById(id);
        List<SetmealDish> setmealDishes =setmealDishMapper .getBySetmealId(id);
        SetmealVO setmealVO =new SetmealVO();
        BeanUtils .copyProperties(setmeal,setmealVO);
       setmealVO .setSetmealDishes(setmealDishes) ;
        return setmealVO ;
    }
    /**
     * 启用、禁用菜品
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Setmeal  setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();
        setmealMapper .update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }
    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

}
